Startup Error 0xc000007b

In early 2019, many people installing or updating Blue Iris 4 began seeing this error message when trying to start Blue Iris:

The application was unable to start correctly (0xc000007b). Click OK to close the application.

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The solution is to install Visual C++ Redistributable Packages for Visual Studio 2013.

Microsoft offers 3 downloads for this, and which one you need depends on if you are installing 64-bit Blue Iris (x64) or 32-bit (x86).